UPGRADING OF LIGNITE WITH WATER AND WITH WATER-TETRALIN-MIXTURES IN SUBCRITICAL AND SUPERCRITICAL STATES

MISSAL P., CANEL M.

CHEMISCHE TECHNIK, vol.43, no.8, pp.295-303, 1991 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 8
  • Publication Date: 1991
  • Journal Name: CHEMISCHE TECHNIK
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), MLA - Modern Language Association Database
  • Page Numbers: pp.295-303
  • Ankara University Affiliated: No

Abstract

Lignite was extraced with water and with water-tetralin-mixtures in sub- and supercritical states. With the help of the technique used, it was possible to study the mechanism of decomposition of the lignite during the extraction. A simple reaction-kinetic model was used to obtain the activation energy and the frequency factor for the extraction with water, respectively water-tetralin-mixtures. A process for upgrading of lignite with water, respectively water-tetralin-mixtures was proposed.